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Zervos M, Mandell LA, Vrooman PS, Andrews CP, McIvor A, Abdulla RH, de Caprariis PJ, Knirsch CA, Amsden GW, Niederman MS, Lode H.Zervos M, et al.Treat Respir Med. 2004;3(5):329-36. doi: 10.2165/00151829-200403050-00006.Treat Respir Med. 2004.PMID: 15606222Clinical Trial.